I'm inclined to suggest splitting the baby on this - WYSIWYG but simple, restricted to bold, italics, a few block formats (code, quote, heading styles, etc.), inline images and links. A simple markup format would do, but WYSIWYG is more friendly to the non-technical user.

Initially, I really would like to thank you of providing this opportunity to us to get connected with you and send you our feeds. And I am so happy to be one of the first users in this support site.
Also, I would also like to thank you for this wonderful script, which I think that came in it's exact time.
Then I have some Suggestions which I think you want to take a look at, most important at the moment is that to provide most of a control panel features which comes in the Admin forums panel (like for exapmle, vb or phpbb forums) to the q2a Admin panel. But aside from that, I will try to transmit it in its time.
With best wishes for this project that it will gain great success always.

1. E-mail validation for new users (prevent spam)
2. Captcha on the user registration form (prevent spam again).
3. Ability to disable a user (to stop him/her from posting) and also an option to delete all their posts/questions.
4. When an user asks a question, the system can display related questions and make the user decide if his question is a duplicate.
5.Ability to vote on comments.
7. View last X comments & questions.
8. It's a great piece of software, but, I would hope that one day you will open-source it (preferably with a BSD style license) and host on something like GitHub.

Thanks for your great suggestions. FYI number 4 is already available, as an option to be switched on by admins. Number 7 is also available for questions (by clicking 'Questions' at the top), but not yet for comments. As for the license, this has been discussed a few times, and it might change in future. Thanks again!